Her filmography includes both feature and short length films. Her first feature film was Fast Food High (2003) where she portrayed Zoe. She portrayed Margaret in the dark comedy Siblings, Priscilla in Charlie Bartlett (2007) and Laura in Leslie, My Name is Evil (2009). Her short film work includes Haley in Burgeon and Fade (2007), Julia in Grange Avenue (2008) and Gabrielle in Spoliation (2008). Burgeon and Fade won the Special Jury Award at the WorldFest Houston Festival for original dramatic short film.

She stars in the short indie film, The Origin of Tedddy Bears as Madison.[3]

Brandon Cronenberg has cast her in his debut feature, Antiviral for which principal photography took place in November 2011.[5]

Personal life

Gadon was born in Toronto, Ontario, to a psychologist father and teacher mother.[6] She has an older brother named James. Gadon spent much of her childhood and adolescence training and performing as a dancer, with time spent as a Junior Associate at The National Ballet School of Canada and as a student at the Claude Watson School for the Performing Arts.[7] She was an Ontario Scholar in high school. Currently, she is a student at the University of Toronto's Cinema Studies program.[8]